Passive RFID Transponder using Open-Stubs for Bit-Capacity Enhancement

One of the best-known wireless tracking and identification technologies available for commercial purposes is radio frequency identification (RFID). Due to its advantages over traditional barcoding, such as non-line of sight (NLOS), orientation insensitivity, robustness, and increased storage, RFID will eventually replace traditional barcoding in retail applications. The main consideration is cost reduction; if done right, RFID may effectively compete with current tracking and monitoring technologies. On an FR-4 substrate, a chipless RFID tag is designed with a physical footprint that measures 50 mm in length, 40 mm in width, and 1.6 mm in thickness. To boost bitcapacity, the suggested design employs open stub resonators. To detect 4 bits with a maximum RCS of -70.36 dBsm, four-open stubs are employed. The frequency domain approach is used in the encoding method (FDA). The developed RFID tag functions between 700 MHz and 1290 MHz in frequency. The frequencies best suited for retail applications.